# Pololu Universal Aluminum Mounting Hub for 8mm Shaft, M3 Holes (2-Pack)

**Type:** Product page · **SKU:** POLOLU-2693 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia)
**Page:** https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-8mm-shaft-m3-holes-2-pack.html ([markdown](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-8mm-shaft-m3-holes-2-pack.html.md))

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 8 mm diameter motor shafts. The set includes two hubs, four M3 set screws for securing the hubs to motor shafts, and one 1.5 mm Allen wrench for use with the set screws. Each hub has six threaded mounting holes for M3 screws (not included).

## Pricing

- **Price:** $25.10 (inc GST) — $22.82 AUD, exc GST
- **Quantity discounts:** 10+ $21.91 (exc GST) · 25+ $21.22 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 3 today, and up to 450 more in 4–7 days.

## Description

These universal mounting hubs are designed to work with most 8 mm diameter shafts, including round shafts and “D” shafts. Each of the two included hubs has six mounting holes for M3 [screws](https://core-electronics.com.au/hardware/screws-nuts.html) (not included), letting you mount custom wheels or mechanisms to your motors. The four included M3 hex set screws (two for each hub) allow secure coupling of shaft to hub, with the longer set screws intended for the deeper of the two set screw holes. A 1.5 mm hex wrench is included for use with the set screws. A dimension diagram of the hub is available under the resources tab.

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**People often buy this product together with:**

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|---|---|

| [![Pololu Universal Aluminum Mounting Hub for 5mm Shaft, M3 Holes (2-Pack)](https://core-electronics.com.au/attachments/localcontent/0J2468_33052118e3.jpg)](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-5mm-shaft-m3-holes-2-pack.html) | [Pololu Universal Aluminum Mounting Hub for 5mm Shaft, M3 Holes (2-Pack)](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-5mm-shaft-m3-holes-2-pack.html) |
|---|---|

| [![Pololu Universal Aluminum Mounting Hub for 6mm Shaft, M3 Holes (2-Pack)](https://core-electronics.com.au/attachments/localcontent/0J1107_3605ff5eca.jpg)](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-6mm-shaft-m3-holes-2-pack.html) | [Pololu Universal Aluminum Mounting Hub for 6mm Shaft, M3 Holes (2-Pack)](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-6mm-shaft-m3-holes-2-pack.html) |
|---|---|

**Dimensions**

 | Size: | 25.4 mm diameter × 9.2 mm thick |
|---|---|
| Weight: | 6.7 g[1](https://core-electronics.com.au/#note1) |
| Shaft diameter: | 8 mm |
| Mounting hole size: | M3[2](https://core-electronics.com.au/#note2) |

**Notes:**

1For a single hub only (with set screws).2This is also the size of the set screws. **File downloads**

- **Dimension diagram of Pololu Universal Aluminum Mounting Hub for 8mm Shaft, M3 Holes (101k pdf)**
- **3D model of the Pololu Universal Aluminum Mounting Hub for 8mm Shaft, M3 Holes (1MB step)**

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/0/j/0j7852.1200.jpg)